What's the highest temperature in Guangzhou in summer?

I. Time of occurrence

August 20 14, 1 became the hottest day in Guangzhou. The average maximum temperature in the city reached 38. 1℃, of which the highest temperature in Guangzhou reached 39.2℃, a local record high.

Second, the background

Guangzhou Meteorological Bureau learned that the high temperature in Guangzhou on 20 14 showed the characteristics of "early appearance, frequent occurrence and high intensity". On May 25th, the highest temperature in Guangzhou reached 35.0℃, which was the first high temperature day this year, 24 days earlier than normal. Just after August, the average number of high temperature days in the city has reached 45.4 days, 28.7 days more than the whole year, the highest in the past years. Huadu, Panyu and Guangzhou all broke the highest number of high temperature days in local history ahead of schedule.

Third, the reason.

Heat transfer caused by high SST

The hot weather in Guangzhou is closely related to the seawater temperature in summer. The high sea water temperature this summer has led to more hot days in Guangzhou. Since the beginning of summer, the intensity of summer monsoon in the South China Sea is mostly strong, and southerly winds continuously transport high-temperature and high-humidity air masses from the ocean to the mainland, forming the weather characteristics of high temperature and high humidity in Guangzhou in summer.

Subtropical hegemony

The intensity of the western Pacific subtropical high is obviously stronger, the area is larger than normal, and it is located in the southwest. The subtropical high has controlled South China for a long time, resulting in sunny and hot weather and partly cloudy high temperature weather under the influence of downward flow.

Typhoon reduction

Generally speaking, the precipitation brought by typhoons in summer can effectively alleviate the hot weather, but there were fewer typhoons in that year than in the same period of normal years, and there was no typhoon in August as never before. It is difficult to relieve the heat for a while, and the high temperature keeps rising.

Source Tencent